Move message_center::CustomNotificationView to arc::ArcNotificationView

ui/message_center/views/custom_notification_content_view_delegate.h

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef UI_MESSAGE_CENTER_CUSTOM_NOTIFICATION_CONTENT_VIEW_DELEGATE_H_
-#define UI_MESSAGE_CENTER_CUSTOM_NOTIFICATION_CONTENT_VIEW_DELEGATE_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "ui/message_center/message_center_export.h"
-
-namespace views {
-class View;
-}  // namespace views
-
-namespace message_center {
-
-// Delegate for a view that is hosted by CustomNotificationView.
-class MESSAGE_CENTER_EXPORT CustomNotificationContentViewDelegate {
- public:
-  virtual bool IsCloseButtonFocused() const = 0;
-  virtual void RequestFocusOnCloseButton() = 0;
-  virtual void UpdateControlButtonsVisibility() = 0;
-  virtual void OnSlideChanged() = 0;
-};
-
-// The struct to hold a view and CustomNotificationContentViewDelegate
-// associating with the view.
-struct MESSAGE_CENTER_EXPORT CustomContent {
- public:
-  CustomContent(
-      std::unique_ptr<views::View> view,
-      std::unique_ptr<CustomNotificationContentViewDelegate> delegate);
-  ~CustomContent();
-
-  std::unique_ptr<views::View> view;
-  std::unique_ptr<CustomNotificationContentViewDelegate> delegate;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(CustomContent);
-};
-
-}  // namespace message_center
-
-#endif  // UI_MESSAGE_CENTER_CUSTOM_NOTIFICATION_CONTENT_VIEW_DELEGATE_H_